VISSIM 5.30-05 User Manual

Public Transport
● Skipping possible: If this option is active, a PT stop is passed without
stop event under certain circumstances:
- If the dwell time is calculated: if there are no passengers who want to
board or alight as the vehicle is within a distance of 50m in front of
the stop.
- If dwell time distributions are used: if the random dwell time results in
a value less than 0.1 s.
A lay-by is skipped completely only if it is composed of a single link which
connects directly back to the link from which it originated. In case the
network topology is more complex or the PT vehicle has already reached
the lay-by link when passing the 50m threshold, it passes the stop
without stopping.
Skipped stops are logged in the vehicle protocol file with ID and dwell
time 0.
● Apply dwell time data to all lines on this stop: If this option is active,
the current dwell time settings for the given PT line at the given PT stop
are applied to all PT lines which serve this stop.
Example: Setting the parameters for micro-simulation
To reproduce the results gained in previous VISSIM versions, set the
following parameters accordingly:
Option Setting
Minimum dwell time Not active
Late boarding possible
Slack time fraction As before
Departure time offset As before
6.5.2.6 Methods for PT Vehicle Dwell Time Calculation
As mentioned in the Line-specific stop data section, there are several
methods to model PT vehicle dwell times in VISSIM:
► Option A: Dwell time distributions
► Option B: Dwell time calculation using the advanced passenger model
► Option C: If the station is simulated microscopically, the dwell time can
be calculated as travel time between two platform edges, cf. section
7.2.1 and section 7.7.
Option A is much faster to define than option B but option B provides a
means to model more accurate stopping behavior, e.g. possible clustering of
vehicles of the same PT line due to lateness.
Option A: Dwell Time Distributions
To use option A, all dwell time distributions that can occur in the VISSIM
network need to be defined beforehand (cf. section 5.2.6). Then for each
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